Malicious PDF — malware analysis report

Static analysis result for SHA-256 749ac576022e0f9d…

MALICIOUS

PDF

42.6 KB Created: 2020-08-31 05:39:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d16f12b48f020c3a74c16a84bf47c7a9 SHA-1: 8212890c12628ad9d5581daf45ba9efd21449a8a SHA-256: 749ac576022e0f9d6ce2dc891c879522f15ad245a3027f26131f98c2397c18c4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a lure related to game activation codes, directing users to a malicious redirector URL. The presence of numerous external PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious content. While no scripts were extracted, the embedded malicious URL is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.link/wix?keyword=the+sims+4+vampires+activation+code
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/febezamumimetunezamulu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7718/0328/files/gujawopuzukekonez.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7248/files/49063596778.pdf
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/nepadizef.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0954/files/88738004746.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/10239752721.pdf
    • https://static.usrfiles.com/ugd/2c8d66_486bfc060d794407bb18008d55d5b1c4.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce2eb99890cb4ec88b7d458bb6da8de4.pdf
    • https://static.usrfiles.com/ugd/ab63e3_670823ecd19f49c4a2973376ae4f1a7d.pdf
    • https://static.usrfiles.com/ugd/d902bb_53c8e8a4e4e84a7b97269bc10fa7ef57.pdf
    • https://static.usrfiles.com/ugd/735424_dc370ff4f4704a228daaeae9c9ef7d8c.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/paloxavisubevoxilemodab.pdf
    • https://cdn.shopify.com/s/files/1/0439/4647/5678/files/bootstrap_responsive_banner_slider_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/vufivosubelowuluwabawap.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4835/files/vunofipidokakeboxoselet.pdf
    • https://cdn.shopify.com/s/files/1/0435/4798/4027/files/bimezunazajusitatag.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067e8.bin
8d29c2af2d549966404d18fc1e34b9fb6276cc1da402845dd4092e5e0055d429		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E8 5380 bytes
font_01_sfnt_off00007a0e.bin
b1aa03d1a57be4e0578c773ad17b8126f8b75c5101aabbf5f2bc4c6f48b9482f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0E 10344 bytes

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